Relief of pain by infusion of morphine after operation: does tolerance develop?

To see whether continuous intravenous infusion of opiates provides more effective postoperative relief of pain than conventional intramuscular injection these regimens were compared in a prospective double blind trial. Thirty patients undergoing elective cholecystectomy were allocated randomly to receive an infusion of morphine or an infusion of placebo (control group) for 24 hours. Both groups were allowed supplementary morphine boluses as requested. During the first 48 hours after operation the degree of pain was almost identical between the groups. Surprisingly, the group that was given the infusion of morphine received as much supplementary morphine as the control group during the first 24 hours and appreciably more during the 24 hours after the infusion had been withdrawn. Nausea and vomiting were more prevalent among the patients given the infusion of morphine. These results suggest that continuous infusion of morphine may be an inferior regimen to intermittent bolus administration in the relief of postoperative pain. This may be explained by the development of tolerance in patients who received the infusion of morphine.     

Efficacy of the pain pump catheter in immediate autologous breast reconstruction

The purpose of the investigation was to evaluate the efficacy of a slow bupivacaine infusion at postoperative surgical sites in immediate breast reconstruction patients. This prospective study included 16 patients who underwent autologous breast reconstruction with a latissimus dorsi pedicled flap immediately after mastectomy. A two-site infusion kit with dual split-flow catheters was secured at the operative sites before skin closure. A spring-loaded disposable pump then infused 0.25% bupivacaine at a rate of 2.08 cc per catheter per hour for 48 continuous hours. Patient pain levels, nausea/emesis, and oral and intravenous narcotic use were then recorded at 12-hour intervals. Medication use was converted to pain units for results comparison (one pain unit was defined as the equivalent of 10 mg of intravenous morphine). A retrospective control group comprised 16 consecutive patients from December of 1999 to October of 2002 who underwent the same surgery by the same surgeon using oral and intravenous pain medications. The experimental group demonstrated a more than fivefold decrease in the use of oral and intravenous pain medications compared with the historical controls (6.7 versus 1.7 pain units) (p < 0.001). The overall pain experienced by the catheter patients was nearly twofold less than the pain experienced by those without the catheter (1.8 versus 3.4 on the visual analog pain scale) (p < 0.017). Twenty-eight percent of the experimental group experienced nausea/emesis compared with 61 percent in the control group. No complications occurred with the use of the pain pump catheter. A 48-hour infusion of 0.25% bupivacaine significantly decreases the need for postoperative narcotics and the over-all pain experience in immediate breast reconstruction patients. This effective form of pain control may alleviate patient concerns of postoperative pain and may safely downstage many plastic surgery procedures, such as immediate breast reconstruction, and many cosmetic procedures to same-day status when the primary indication for admission is pain management.     

Respiratory effects of analgesia after cholecystectomy: comparison of continuous and intermittent papaveretum.

Two methods of administering papaveretum for relieving postoperative pain were compared in two groups of patients who had undergone cholecystectomy. In one group a loading dose of papaveretum was administered by continuous intravenous infusion (1 mg/min) until the patient could breathe deeply without undue pain. Eight times this loading dose was given as a continuous intravenous infusion over the subsequent 48 hours. This regimen was compared with a conventional intermittent intramuscular dose (0.25 mg/kg at four hourly intervals as necessary) in a second group of patients. The intravenous regimen relieved pain better than the intramuscular regimen, which may have reflected the larger dose of papaveretum given to the intravenous group, but it was accompanied by a greater degree of respiratory depression and potentially life-threatening changes in respiratory pattern. These findings suggest that the fear which often accounts for inadequate postoperative pain relief-that larger dose of analgesics will cause respiratory complications-is well founded.     

右美沙芬用于80 例胆囊切除术后镇痛的临床观察与分析

目的:观察和分析右美沙芬用于80例胆囊切除术的超前镇痛作用临床疗效。方法:将2009年8月~2011年11月我院接收并确诊的80例ASAⅠ~Ⅱ级择期行腹腔镜胆囊切除手术患者,按患者意愿随机分为两组。治疗组40例,麻醉诱导前30min肌注右美沙芬20mg;对照组40例,麻醉诱导前30min肌注等量生理盐水。术中监测患者的血氧饱和度值、心率、平均动脉压等;术后统计术中(除麻醉诱导外)镇痛药的用量,并对患者伤口疼痛进行VAS评分。结果:对照组术中镇痛药(除麻醉诱导外)用量大于治疗组,但二者无统计学差异(P>0.05),术后伤口无痛者治疗组明显多于对照组,治疗组VAS评分显著低于对照组,差异有统计学意义(P<0.01)。结论:右美沙芬对于胆囊切除术有超前镇痛的作用,麻醉诱导前30 min肌注20mg,不仅可以减少术中镇痛药的用量,而且在更大程度上减轻了术后患者伤口的疼痛。     

Postoperative analgesia with controlled-release morphine sulphate: comparison with intramuscular morphine.

Fifty patients undergoing hysterectomy or cholecystectomy took part in a trail of postoperative analgesia provided by either intramuscular morphine or controlled-release morphine sulphate tablets orally. Respiratory function and plasma catecholamine concentrations were measured after operation and pain was assessed by using a linear analogue scoring method. Controlled-release morphine sulphate produced comparable pain relief with that of intramuscular morphine, and depression of respiratory function after operation was similar with the two analgesic regimens. The mean total dose of drug per patient given over 48 h to patients undergoing hysterectomy was 115 mg for morphine sulphate and 53 mg for morphine. Patients undergoing cholecystectomy received 130 mg morphine sulphate or 76 mg morphine. There was more sedation after operation in those patients undergoing hysterectomy who received morphine sulphate tablets. Morphine sulphate tablets produced satisfactory postoperative analgesia compared with intramuscular morphine: both regimens were acceptable to the patients.     

Intravenous gammaglobulin treatment in patients with hypogammaglobulinaemia.

Intravenous gammaglobulin was compared with the standard British intramuscular preparation in patients with hypogammaglobulinaemia and chronic bronchitis. Five patients were given six months'' treatment with the weekly intramuscular preparation and six months'' treatment with intravenous gammaglobulin given once every 18 days. During the trial they recorded symptoms of infection, absence from work, and sputum volume; lung function tests were performed during the intravenous treatment. The half life of the intravenous IgG and changes in serum IgG and C1q concentrations were also measured in seven other patients who received intravenous gammaglobulin every two weeks for 12 weeks. IgG concentrations, sputum volume, and infection scores were significantly better during intravenous treatment and there were no adverse effects from the intravenous gammaglobulin. These five patients were significantly more healthy when they received an intravenous gammaglobulin preparation, probably because the intravenous preparation increased serum IgG concentrations. Although longer studies are needed, intravenous gammaglobulin should be considered for patients with severe chest disease and those who cannot tolerate intramuscular injections.     

Patients' attitudes to induction and labour.

An attempt was made to ascertain patients'' attitudes towards planned induction and labour. Twenty per cent of patients had not heard of induction before their pregnancy, and those who had had most probably heard about it from relations and friends rather than the media. Most patients had no firm opinions on induction of labour but were usually glad to have their pregnancy ended. Many considered that they had not been given enough information by the medical staff on their induction. The amount of pain experienced by patients at amniotomy was related to the "favourability" of the cervix. Possibly women with a low cervical score should be given more premedication or inhalation analgesia at amniotomy. Most patients found injections of narcotic agents adequate analgesia in labour. Those patients who did not receive adequate analgesia were principally those who had either very short or quite long labours. Patients with long labours may benefit from more liberal use of analgesia, but no satisfactory form of analgesia seems to be available for patients who are likely to deliver within two or three hours of induction.     

Evaluation of liposome-encapsulated oxymorphone hydrochloride in mice after splenectomy

The use of mice in biomedical research is increasing, largely due to the production and use of genetically engineered animals. Providing postoperative pain control in mice presents many challenges, and long-acting analgesic preparations would be advantageous for this species. A single subcutaneous injection of a liposome-encapsulated (LE) preparation of oxymorphone was compared with multiple injections of buprenorphine or saline in outbred mice undergoing splenectomy. Control groups were given isoflurane alone or isoflurane and an injection of LE oxymorphone but did not undergo surgery. The following parameters were evaluated for 5 days after surgery and were compared with presurgical baseline data for each group: food and water consumption, body weight, ethographic score, and voluntary exercise on a running wheel. Ethographic scores indicated less postsurgical pain in both groups of mice that received either analgesic preparation compared with mice that received only saline. However, mice given LE oxymorphone had superior postoperative recovery, as measured by wheel-running distance and body weight gain, compared with mice given buprenorphine or saline. Mice undergoing splenectomy had significant decreases in body weight, food and water consumption, voluntary exercise, and other normal behaviors. Administration of liposomal oxymorphone at the time of surgery improved postsurgical recovery as measured by these parameters compared with multiple injections of buprenorphine or saline alone. Administration of LE oxymorphone at the time of surgery improved postsurgical recovery, as measured by these parameters.     

Effect of Rapid Intravenous Infusion on Serum Concentrations of Amphotericin B

The magnitude of the concentrations of amphotericin B produced in serum of patients with systemic mycoses may significantly influence the outcome of therapy with this drug. Since amphotericin B is conventionally administered in intravenous infusions lasting 4 to 6 hr, we asked whether faster infusions of this drug might yield higher serum concentrations without an increase in dose. This question was studied in three patients who received 16 infusions of this drug: eight infusions administered slowly (5 hr) and eight administered rapidly (45 min). Serum concentrations after each rapid infusion were compared with those after a slow infusion administered to the same patient. The mean serum concentration of amphotericin B 1 hr after the rapid infusions (2.02 mug/ml) was significantly higher (P < 0.001) than the mean serum concentration of amphotericin B 1 hr after the slow infusions of this drug (1.18 mug/ml). Mean serum concentrations 18 and 42 hr after rapid infusion remained slightly but not significantly higher than respective mean concentrations after slow infusions. By yielding higher initial serum concentration, rapid intravenous infusion may be therapeutically more effective than slow infusion of amphotericin B. Although rapid infusions caused no more toxicity than did slow infusions, the lack of greater toxicity with rapid infusion of amphotericin B should be further documented prior to extensive clinical application of this procedure.     

Liposome-encapsulated oxymorphone hydrochloride provides prolonged relief of postsurgical visceral pain in rats

Adequate pain control is necessary for optimal postsurgical recovery and humane treatment of laboratory and companion animals. Opioid drugs are currently the most potent analgesic agents available in human and veterinary medicine. Long-acting formulations of opioid drugs confer several important advantages over standard pharmaceutical preparations, especially for use in animals. A long-acting formulation of oxymorphone hydrochloride was produced by encapsulation into liposomes. Liposome-encapsulated (LE) oxymorphone was tested in a rat model of visceral postoperative pain. Rats were given one subcutaneous injection of LE oxymorphone (1.2 or 1.6 mg/kg of body weight) or standard oxymorphone (0.3 mg/kg) at the time of intestinal transection or resection. A single administration of LE oxymorphone hydrochloride was as effective for relief of postoperative pain in rats (P = 0.18), as were multiple (q4 h or q8 h) injections of 0.3 mg/kg of the standard pharmaceutical preparation. The rats given LE oxymorphone prior to intestinal resection also had significantly higher body weight at three and seven days after surgery than did rats that were given standard oxymorphone. In conclusion, LE oxymorphone was effective in treating visceral pain associated with intestinal surgery in rats. On the basis of body weight gain, rats treated with LE oxymorphone had improved recovery outcome, compared with rats treated with repeated injections of standard oxymorphone.     

经皮椎间孔镜联合超前镇痛的术后疼痛的疗效分析

目的:探讨经皮椎间孔镜联合盘内注射胶原酶对于椎间盘突出症术后疼痛的疗效。方法:选取我科收治的经皮椎间孔镜手术患者110例,将其随机分为观察组以及对照组,每组55例,观察组采取椎间孔镜联合盘内注射胶原酶联合超前镇痛治疗,对照组给予相同的手术方式联合术后口服药物治疗,连续治疗1个疗程后,比较两组患者术后4、12、24、48、72 h的疼痛评分,观察两组术后曲马多的用量,比较两组患者术后出现恶心、呕吐、嗜睡、便秘、皮肤瘙痒等并发症的发生情况,比较两组术前以及术后7、14d的JOA评分情况。结果:术后4、12、24、48、72 h观察组的疼痛评分均明显低于对照组,观察两组术后曲马多的用量明显少于对照组,观察组术后并发症的发生率为7.27%(4/55),对照组为30.91%(17/55),组间比较有明显差异(x2=13.624,P0.05),术后7 d观察组JOA评分明显优于对照组,P0.05,术后14 d组间比较无明显差异,P0.05。结论:塞来昔布超前镇痛措施应用于经皮椎间孔镜联合盘内注射胶原酶治疗腰椎间盘突出症术后患者能够有效缓解术后疼痛,并减少术后阿片类药物的使用,改善术后功能,值得临床推广应用。     

Cryoanalgesia for relief of pain after thoracotomy.

One hundred patients undergoing thoracotomy had their intercostal nerves blocked by cryoanalgesia before closure and the effect of this on their postoperative pain was evaluated. Of the 100 patients, 79 were free of pain, 12 had some discomfort, and nine reported severe pain necessitating narcotic analgesia (mean 1.5 injections per patient). Only five patients needed assisted removal of sputum, though eight showed retention of sputum or subsegmental collapse of lung radiographically. Overall, lack of pain and greater alertness much enhanced the value of physiotherapy, which resulted in a low incidence of complications and a smooth recovery. The technique of cryoanalgesia is simple, extremely effective, and apparently offers benefits not conferred by other methods of preventing pain after thoracotomy.     

Effect of single high dose infusions of aminohydroxypropylidene diphosphonate on hypercalcaemia caused by cancer.

Single intravenous infusions of 30 mg aminohydroxypropylidene diphosphonate were given to 16 patients who had malignant hypercalcaemia to assess host tolerance and the effect on serum calcium concentration. Ten of these patients also received intravenous rehydration or corticosteroids, or both. The serum calcium concentrations decreased significantly after treatment with aminohydroxypropylidene diphosphonate. Ten patients became normocalcaemic (normal range, adjusted for serum albumin, 2.25-2.75 mmol/l), two became hypocalcaemic, three showed decreases in serum calcium concentrations of more than 0.75 mmol/l, and one showed a decrease of more than 0.55 mmol/l. Only one patient had a minimum concentration greater than 2.77 mmol/l. Aminohydroxypropylidene diphosphonate was effective in metastatic and non-metastatic hypercalcaemia, and its hypocalcaemic effect was prolonged in some cases. There were no appreciable side effects. Single high dose infusions of aminohydroxypropylidene diphosphonate could replace conventional daily lower dose infusions, but the optimum frequency of high dose infusions remains to be determined.     

The Effectiveness of Pregabalin for Post-Tonsillectomy Pain Control: A Randomized Controlled Trial

BackgroundAlthough various analgesics have been used, postoperative pain remains one of the most troublesome aspects of tonsillectomy for patients.ObjectiveThe aim of the present study was to evaluate the effectiveness of premedication using pregabalin compared with placebo (diazepam) on postoperative pain control in patients undergoing tonsillectomy.MethodsForty-eight adult patients were randomly divided into a control group and a pregabalin group. Preoperatively, patients in the control group received 4 mg diazepam orally as placebo, whereas those in the pregabalin group received 300 mg pregabalin orally. All participants were provided with patient-controlled analgesia using fentanyl for 24 hours after surgery. Postoperative pain treatment included acetaminophen 650 mg three times daily for 8 postoperative days. The primary outcome measure was the total amount of patient-controlled fentanyl consumption after tonsillectomy. Secondary outcome measures were the number of injections of ketorolac tromethamine (each 30 mg) requested by patients, pain scores, overall satisfaction scores, drowsiness, nausea, dizziness, headache, and vomiting after the surgery. P < 0.05 was considered statistically significant.ResultsThe total amount of fentanyl demanded decreased significantly in the pregabalin group (P < 0.001). There were no significant differences in the number of ketorolac tromethamine injections, pain scores, overall satisfaction scores, drowsiness, nausea, dizziness, headache, and vomiting between the two groups.ConclusionAdministration of 300 mg pregabalin prior to tonsillectomy decreases fentanyl consumption compared with that after 4 mg diazepam, without an increased incidence of adverse effects.

Trial Registration

KCT0001215     

Improved pain relief after thoracotomy: use of cryoprobe and morphine infusion.

In a randomised controlled trial carried out during the first to days after thoracotomy patients who had had intercostal nerves frozen with a cryoprobe or were given morphine by continuous intravenous infusion had significant less pain at rest than patients given intramuscular morphine. Differences between the groups with respect to pain on movement and during physiotherapy were not significant. Pain was estimated using visual analogue scales, and an arc sine transformation was carried out on values obtained from these scales before comparison using an analysis of variance. The trial did not distinguish between the cryoprobe and infusion treatment. The simplicity of the cryoprobe had much to commend it, but in units without access to this equipment a small infusion pump offers a satisfactory alternative.     

An outcome study comparing intravenous sedation with midazolam/fentanyl (conscious sedation) versus propofol infusion (deep sedation) for aesthetic surgery

The purpose of this study was to determine the differences in measurable outcomes following aesthetic procedures performed under intravenous sedation with incremental doses of midazolam and fentanyl and those performed under propofol infusion. The authors' hypothesis was that the differences in these outcome parameters are not significant between these intravenous sedation protocols. All intraoperative and perioperative records of 84 consecutive patients having aesthetic surgery under a conscious sedation protocol using incremental doses of intravenous midazolam and fentanyl were retrospectively reviewed and compared with the records of a second group of 85 patients having aesthetic surgery under a deep sedation regimen based primarily on propofol infusion. All procedures were hospital based and performed by two surgeons. Twenty-eight different parameters were examined by chart review. In addition, a patient questionnaire was used to assess patient satisfaction and patient recall of operative and perioperative pain, anxiety, nausea, and vomiting. Multivariate statistical analysis was conducted. The two sedation groups were similar with regard to aesthetic procedures performed and patient demographics. The mean duration of operative time was statistically equivalent (152 minutes and 153 minutes). In both groups, there were minor adverse intraoperative events reported but no significant complications. Transient hypotension was more common in the propofol infusion group (12.9 percent versus 2.4 percent, p = 0.018), but no patient required intervention beyond reducing the sedative agent or increasing intravenous fluids. The amount of supplemental fentanyl given intraoperatively was significantly higher in the group whose primary agent for sedation was propofol infusion than the group who received midazolam/fentanyl (209 mug and 143 mug, respectively). The overall questionnaire response rate was 80 percent for both groups. The midazolam/fentanyl sedation group had more recall of "unpleasant intraoperative events" (17 percent versus 3 percent, p = 0.007). However, both groups had low recall of intraoperative pain, anxiety, and nausea. The propofol infusion group experienced significantly more nausea in the recovery room (p = 0.002), nausea at the time of discharge (p = 0.009), and nausea the evening after the operation (p = 0.013). Greater than 90 percent of the patients in both groups would have the same anesthetic in the future rather than undergo general anesthesia. Patient safety, outcomes, and satisfaction are similar in plastic surgery procedures performed under sedation protocols using either incremental doses of midazolam and fentanyl or propofol infusion. All operative and postoperative outcomes for pain, anxiety, and vomiting were similar in the two groups except for immediate postoperative nausea, which was higher in the propofol infusion group. The overall satisfaction of patients undergoing plastic surgery procedures under these intravenous sedation protocols appears very high.     

右美托咪定对腰椎全麻手术患者术后疼痛及认知功能的影响

目的:探讨右美托咪定对腰椎全麻手术患者术后疼痛及认知功能的影响。方法:选择2014年3月~2015年12月在我院行腰椎全麻手术的84例患者为研究对象,按照随机数字表法分为对照组(42例)和试验组(42例),患者均常规给予芬太尼及顺式阿曲库铵麻醉诱导,试验组患者在麻醉诱导过程中给予右美托咪定静脉注射,对照组患者仅给予氯化钠注射液静脉注射。分别于术前(T0)、手术开始2 h(T2)、术后24 h(T24)检测血清肾上腺糖皮质激素,采用疼痛视觉模拟评分法(VAS)进行疼痛评定;采用简易智能精神状态量表(MMSE)于术后1d和2d进行认知状态评定,并计算术后认知功能障碍(POCD)发生率;同时观察患者不良反应发生情况。结果:试验组患者T2和T24时肾上腺糖皮质激素水平明显低于T0,T2时试验组患者肾上腺糖皮质激素水平明显低于对照组,差异有统计学意义(P0.05)。试验组患者T2时VAS评分明显低于对照组,差异有统计学意义(P0.05)。术后1d和2d时试验组患者的MMSE评分高于对照组,POCD发生率明显低于对照组;两组患者术后2d时MMSE评分高于术后1d,POCD发生率明显低于术后1d,差异均有统计学意义(P0.05)。两组患者均未见除POCD以外的不良反应。结论:右美托咪定有较强的抗氧化能力,可有效减轻腰椎全麻手术患者的疼痛程度,提高患者的认知功能。     

Umbilical cord blood stem cell treatment for a patient with psoriatic arthritis

Clinical and laboratory results document psoriatic arthritis in a 56-year old patient. The symptoms did not resolve with standard treatments(nonsteroidal anti-inflammatory drugs, steroids and methotrexate). TNF-alpha inhibitors(certolizumab pegol and adalimumab) were added to the treatment regime, with some adverse effects. A trial of human umbilical cord stem cell therapy was then initiated. The stem cells were enriched and concentrated from whole cord blood, by removal of erythrocytes and centrifugation. The patient received several infusions of cord blood stem cells, through intravenous and intra-articular injections. These stem cell treatments correlated with remission of symptoms(joint pain and psoriatic plaques) and normalized serologic results for the inflammatory markers C-reactive protein and erythrocyte sedimentation rate. These improvements were noted within the first thirty days post-treatment, and were sustained for more than one year. The results of this trial suggest that cord blood stem cells may have important therapeutic value for patients with psoriatic arthritis, particularly for those who cannot tolerate standard treatments.     

The Efficacy of Acupuncture in Post-Operative Pain Management: A Systematic Review and Meta-Analysis

Background

Postoperative pain resulting from surgical trauma is a significant challenge for healthcare providers. Opioid analgesics are commonly used to treat postoperative pain; however, these drugs are associated with a number of undesirable side effects.

Objective

This systematic review and meta-analysis evaluated the effectiveness of acupuncture and acupuncture-related techniques in treating postoperative pain.

Data Source

MEDLINE, Cochrane Library, and EMBASE databases were searched until Sep 30, 2014.

Study Eligibility Criteria

Randomized controlled trials of adult subjects (≥ 18 years) who had undergone surgery and who had received acupuncture, electroacupuncture, or acupoint electrical stimulation for managing acute post-operative pain were included.

Results

We found that patients treated with acupuncture or related techniques had less pain and used less opioid analgesics on Day 1 after surgery compared with those treated with control (P < 0.001). Sensitivity analysis using the leave-one-out approach indicated the findings are reliable and are not dependent on any one study. In addition, no publication bias was detected. Subgroup analysis indicated that conventional acupuncture and transcutaneous electric acupoint stimulation (TEAS) were associated with less postoperative pain one day following surgery than control treatment, while electroacupuncture was similar to control (P = 0.116). TEAS was associated with significantly greater reduction in opioid analgesic use on Day 1 post surgery than control (P < 0.001); however conventional acupuncture and electroacupuncture showed no benefit in reducing opioid analgesic use compared with control (P ≥ 0.142).

Conclusion

Our findings indicate that certain modes of acupuncture improved postoperative pain on the first day after surgery and reduced opioid use. Our findings support the use of acupuncture as adjuvant therapy in treating postoperative pain.     

骨科术后疼痛的原因分析及对策研究

目的:总结骨科术后疼痛的原因,并采取合适对策,以期降低骨科患者疼痛,提高满意度。方法:选取2012年1月-2015年1月1500例骨科手术患者为研究对象,总结引起疼痛的原因,并按照住院号单双号分成2组,对照组给予双氯芬酸钠栓镇痛,观察组采用镇痛泵镇痛,根据麻醉情况选择静脉镇痛或硬膜外镇痛,给予舒芬太尼或地佐辛镇痛,观察两组治疗前后相关指标的变化情况。结果:骨科术后疼痛原因以手术创伤为主,占92.93%,其次是手术体位限制,占53.07%,尿潴留占37.07%。两组治疗后SAS、SDS评分均较治疗前显著下降,差异具有统计学意义(P0.05),观察组治疗后SAS、SDS评分较对照组治疗后改善更加显著(P0.05)。观察组治疗后3 h、10 h、1 d、3 d、7 d VAS评分均较治疗前显著下降(P0.05),对照组治疗后3 d、7 d VAS评分较治疗前显著下降(P0.05),观察组治疗后3 h、10 h、1 d、3 d VAS评分较对照组改善更加显著(P0.05)。结论:骨科术后疼痛原因主要与手术创伤、手术体位限制有关,使用镇痛泵辅以及心理疏导能有效缓解骨科术后患者的对疼痛的感知,改善患者术后的生活质量。